157172704 has 36 divisors (see below), whose sum is σ = 335078856. Its totient is φ = 72538752.

The previous prime is 157172677. The next prime is 157172711. The reversal of 157172704 is 407271751.

It is a self number, because there is not a number n which added to its sum of digits gives 157172704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9124 + ... + 19939.

It is an arithmetic number, because the mean of its divisors is an integer number (9307746).

Almost surely, 2^157172704 is an apocalyptic number.

It is an amenable number.

157172704 is an abundant number, since it is smaller than the sum of its proper divisors (177906152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157172704 is a wasteful number, since it uses less digits than its factorization.

157172704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29099 (or 29078 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 157172704 is about 12536.8538318033. The cubic root of 157172704 is about 539.6668086309. Note that the first 3 decimals are identical.

The spelling of 157172704 in words is "one hundred fifty-seven million, one hundred seventy-two thousand, seven hundred four".